[TI-73, TI-83, TI-86] Strange implied RETURN behavior

[Hlib]

TI calculators are negligent about syntax. This slightly saves memory, sometimes allows you to do undocumented tricks. In cyclic computing, these tricks may slow down the program, as mentioned long ago on the TI-forum. Here are some examples for TI-83.
{1,2,3->AB instead of {1,2,3}->LAB
DelVar_AB->C instead of DelVar_A:B->C
If_B:5->C ... If_B<>0:Then:5->C
For(A,1,B,C:End ... For(A,1,B,C):End and so on.